Ventilator.



J. SYLVAN.

VENTILATOR.

APPLICATION FILED OCT. 4. 191a.

Patented Feb. 25

1 UNITED STATES PATENT OFFICE.

JOSEPH 'sYLvAn, or crushe ILLINOIS.

: Figure 1 represents a VENTILATORI Application filed October 4, 1918. Serial no. 256,788.

To all whom it may concern: 7

Be it known that I, JOSEPH SYLVAN, a citizen of the United States, and a residentfof Chicago, in the county of Cook and State of Illinois, haveinvented-certain new andusefullmprovements in Ventilators; and I do hereby declare thatthe following is a full, clear, and exact description'thereof, reference being had to theaccompanying drawings, and to the letters of'reference marked thereon, which form apart of this specification.

This invention relates to improvements in ventilators for roofs, skylights and the like, and consists of the matters hereinafter described and moreparticularly pointed out in the appended claims. Thejobject of theinvention is to provide a ventilator of the kind described in my pending-application, Serial Number 251,867, filed August 29, 1918-, with a novelandimproved means for increasing the updraft and at the same time preventing' 'adowndraft;' The 'manyadvantages 0fthe invention will appearas l-proceed with my specification. I In the drawings my improvedventilato-r with parts shown as brokenawayto more clearly show the interior construction of the same.

Fig. 2 represents a vertical section through the'sameflzhe plane'of the section beingindi- 'cated by the line 22 of Fig. 3. I Y

" )Fig; 3 represents a horizontal section through "the ventilator-in a plane indicated by the line 3"3 of'Fig.2'. Fig. 4 represents a'perspectiveview of an interior part of theventilatorand will be more specifically referredto later;

Fig."5represents avertical, detail section which; will also be more specifically referred to'laterf Referring n'ow "in detail to that embodiment of the' invention illustrated in-the-am companying; drawings:7 indicates as; "a

' whole, the improved ventilator f which is made of sheet metal; 8 indicates the'upright, tubular stem ofthe ventilator which-is attached in any suitable manner-to a roof or skylight, and S'indicates the conical cover or perspective viewof' Specification of Iletters Patent. P t t d 25 191 7 top of the ventilator which is spaced a suitab e distance above thetop' end of the stem 8. Said top'is substantially rectangular in plan and is longer in one direction than the other, and has rounded corners.

10, 10 indicate opposed, upright end walls or'weathershields, which are fixed at their top ends to the shorter ends of the cover or top-and are held in suitable spaced relation with respect to the stem 8 by horizontal webs 11. The marginal side parts offthe said upright walls 10, are curved transversely to conform to-V the rounded corners of said cover or top 9. The webs .11 act as barriers against upward air-currents and also act as drain plates for such moisture as forms on the inner surfaces of said upright walls 10.

j 12, 12 indicate opposed, upright" wing plates which are arranged in planes at right angles to, the planes of saidupright walls 10.

' Said wing plates are of a width equaling the distance etween" the edges'of the curved margins ofthe end walls 10 and have up-" right marginal flanges 13 which are" fixed at 'thein-bottom ends to the stem 8 and at their top ends to the innersurfaceof the top '9, in a line spaced inwardly from the longer sides'of said top.

Therniddlejp'arts of the wing plates are.

flared outwardly from top to bottom, to

provide conduits-'14 which lead'into the interior' of the ventilator above the top end of the stem. The bottom ends of said conduits provide entrance openings or mouths for the entrance and exit of air currents. To prevent the air entering through said mouths from passing directly into said stein, I provide bafiies 15 and '16 which direct theair ourrentsiin a tortuous path upwardly above said stem. The bafiles 15 are attached to the inwardly toward the stem, while the other baflles 16-are attached to the topendof the stem and extend outwardly therefrom as shown in Fig. '5. The structure justdescribed, is substantially the same as that 90 bottom edge of the'conduitssle and'extend deflector comprises two similar, divergent legs 18, 18 which are connected together at their top ends and diverge downwardly and outwardly r t p e tt m.- Lhe. t p ds of saidlegs, which are of a Width approximating the diameter of the stem, are arranged in a plane extending transversely ofthe Wing plates, and each 'tapersdow-n v Wardly and in cross section from the top to the bottom, from a substantially flat cross 7 section at the top, to a transversely curved or 'l-Vshaped' cross seetiem The ottom ends of the legs are fixed to theonter surface of the top end of the stem 8, in the longitudinal med n Plehe of th v ntilater he h l 1 The epe e ieh of he impro ed vehti et s aeri e s- With en. cem nt e hgih a plane par l l th n W lle 1 1,, e res of said air will enter the ventilator through e pen ngs defi e by he dg f t ur edmerg n ef, he end e l-e ehd' he dg sef the prigh ergih l flehge -efthe wing-plates, and pass out of the ventilator hre gh he o res ondi g: open ngs e th opposite side of the ventilator. A part of th s a re. d l cte by str king the bottom nds. of t legs of the. clefle te s e heme ail-current is pro dncedacross the top of the s em. The c r nt of airf hus p e hg thr gh. the "entilat li will pr u e an. updraft, inv the, stem and draw the, airiout'of the room of the building tov which the venilator s appl ed he mov n 1 cu.rrents of air enter the ven ileterthre g. the/mouth; or th eeid-eurren nt tw Pe t emi- {151E661} h ll n er-he b dy Whieh pees -ng hemeehtelly through th vent leieh' The deflee e A i-t u et h deflee h down.-

a wee -e ehr teht. eutwe d y e l. iq z vents Sho l -any moi ture 00 it; ente ing er-b wihg l w, th stemh he eerreht te -ewe up, the; shrfeee ef the e hdiiih t illestehl sh. a shetTeh @QhlQll h hat pert of the her; end .ef he stem, efieetee V-hy' the eh eet r Passing hor zontally hreh shv the vehth leter, so ha t e; snctieh; aetionja a, whele is fel ov r s ihs en iel y I th Who are de ned" hy the stenn ll et'en th inaer snrface efthe; top or cover, ue to densation, thismoisture will drain toward the edges of the top and either pass down- W 1Iit 0lllthS3 inn r faces f th condui let: to be di eharged through. the mo ths thereof, or downwardly to engage the inner face of the end Walls 10 and from there onto the plates or Webs 11, to be discharged ehteide o the ve et 2 1.1": the. mei of condensation collects too; rapidly at the middle of the ventilator top, it Will fall onto the top of the deflector and be directed downwardlytby vthe legs thereof, onto said plates or Webs, to be discharged as before r'nentioned. I

' lhus, thisdeflector adds to the efficiency and improves the operation ofthe. ventilator by? deflecting the air across the top of the stem to lncrease the updraft and by preg the air enteri g; he tem; tQlnREQ l L Q dewn lfefis threngh t st ni- Whil ese ti ihg 'i i'ehtieha har refe red hfitfihhhhih leteils elf eeh tri and am sement-Qt Per s he met wish s) be hrh ted-therehe xeept h isted met in he-eppeh lee; leims; V,

- 1Ze1eim inv eti n: e

111-; A ventilator f r ree s, s y ghts and he ike. ompri ing n QQIhb Ilhthm w therupright, tubular stem, a cover spaced vertii e hzw s eve aid" 1 3,9 eizright, ppos shield eh lwvh' g ple es -ettaeheel to ai tem. end. eere s the he s sheei said wihdw h eldsv nds-Wins Pleteie being, epeeed apart to provide passageways into out o the venti etehhhd lefieeterm mher' in aid en lator" eeihPri-eihg: Phirehty 015 ess .eemieeh e tegeiheh at ehe h teeeerie end-engaged; egeih t the. uter dge ei'thle enema th ir team end-seem. 1161. re eerheing' magnetite defiee the dewn drefi frexh' the core .ef-fth ventilator t mints.

y nd am without. the, ep end; e the stem- 2. A ventilator for reefs; SkYl-ights and the like, compr singn, eemh he ieh with en,

upright, huh ast rs, se er peeeel ertie liy above said;steml pr ght, epesed Wind ds andn-ing pla e attached te said stemhnd Leorer, he margins fw e wind shields and; ring plates being spaced p rt' provide pas ag ways into and ou of said ventilator, amt h; defieet memb insaidventiletor comprising-two opnesi ely disposed, diverging legs .whieh are conienected' at heir. top. ends, a width approximating-the d etepqfthe stern, the 'said- Jl 'gs :taherlh said top-ends to a narrower, transversely curved, U-shaped cross section at theirbottom ends,;said:'bettom ends be hg-aa-ttaehe to the; enter-edge of the stem, said legs beere; iheh (if V V deeet erdlyitem a hhstantial-lyv flat cross. eeetmh at the ing adeptediwdeflectthedome-dr fts from the-hover of {the ventilator; Qto ,points'beyond: and fwitheut the. top end of the stem,

e 3, A, deflector inember for;ventilators oof the; kind described, comprising-awe oppo; sitelydlsposedlegs whichare eonneeted to:

gether at their top ends and diverge downas my invention, I aflix'rny signature, the wardly and outwardly from said top ends, presence of two witnesses, this 28thday of each leg tapering from top to bottom from September, A. D. 1918. a substantially wide, flat cross section to a JOSEPH SYLVAN. narrower, transversely curved, U-shaped Witnesses T. H. ALFREDS,

cross section. 0

In testimony that I clann the foregoing D. DARREVOUGUE.

Copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0." v v j v 

